Nokia

About: Nokia is a company organization based out in Espoo, Finland. It is known for research contribution in the topics: Signal & Mobile station. The organization has 16625 authors who have published 28347 publications receiving 695725 citations. The organization is also known as: Nokia Oyj & Oy Nokia Ab.

Collaborative Energy and Information Transfer in Green Wireless Sensor Networks for Smart Cities

Abstract: Smart city is able to make the city source and infrastructure more efficiently utilized, which improves the quality of life for citizens. In this framework, wireless sensor networks (WSNs) play an important role to collect, process, and analyze the corresponding information. However, the massive deployment of WSNs consumes a significant energy consumption, which has raised the growing demand for green WSNs for smart cities. Exploiting the recent advance in collaborative energy and information transfer to power the WSNs and transmit the data has been considered a promising approach to realize the green WSNs for smart cities. We propose an architecture design of the green WSNs for smart cities, by exploiting the collaborative energy and information transfer protocol, and illustrate the challenging issues in this design. To achieve a green system design, the sensor nodes in WSNs harvest the energy simultaneously with the information decoding (ID) from the received radio frequency signals. Specifically, the energy-constrained sensor nodes partition the received signals into two independent groups to perform energy harvesting (EH) and ID. The sensor nodes then use the harvested energy to amplify and forward the information signals. We study the joint optimization of subcarrier grouping, subcarrier pairing, and power allocation such that the transmission rate performance is maximized with the EH constraint. The joint optimization problem is solved via dual decomposition after transforming it into an equivalent convex optimization problem. Simulation results tested with the real WSNs system data indicate that the performance of our proposed protocol can be significantly improved.

Compound ring tunes

Abstract: A manner of providing ring-tune alerts to announce the arrival of incoming communications at a communication device such as a mobile station operable in a wireless communication network. When notification an incoming communication arrives at the mobile station, the mobile station detects the type and origin of the communication and then composes a ring tune enhanced to provide incoming call information to the subscriber. The enhancement may include temporarily compounding the ring tune, tonal or stylistic enhancement, applying compound accompaniment, or applying tempo variation. The ring-tune components may be installed by the manufacturer or distributor of the instrument, or may be downloaded by the subscriber. The communication device may also be a personal computer operable to communicate through a communication network such as the Internet.

System, and associated method, for downloading an application

Abstract: A method for facilitating the downloading of an application from a server computer to a client device, whereby the client device generates to the server computer an initiation request for information describing available applications. In response to receipt of the initiation request, the server computer retrieves, for each available application, information describing the respective application, and a link to an application descriptor for the respective application. The server computer transmits the information and link to the client device, which in turn displays the information and stores the link. When the user selects an application, the link for the selected application is recalled and is reached on the server computer for retrieval of the application descriptor. From the application descriptor, the client device may determine whether the application fits the device profile and, hence, whether to download the application.

Personal profile sharing and management for short-range wireless terminals

Abstract: A mobile, wireless terminal (101) contains apparatus for creating, editing and storing user personalized profiles for access by inquiring terminals in a short-range communication system. The mobile, wireless terminal contains databases for storing standardized format profiles containing user contact information (301), standardized format profiles of user interests (304), and user or manufacturer defined profiles (312). The personalized profiles are stored in a single record of a Service Discovery Protocol database (209). Screen display apparatus (201) in the mobile terminal displays indexes and contents of the profiles for user access in creating, editing and storing user profiles. The mobile terminal includes apparatus responsive to SDP inquires from inquiring terminals for access to and acquisition of the user defined personalized profiles.

Location updating for a packet-switched data service in a mobile communication system

Abstract: The present invention relates to a method and arrangement for location management in connection with packet data transmission. The mobile communication system comprises dedicated location management and location updating for mobile stations using a packet service in addition to the normal location management and location area configuration. This location management of the packet service takes place with an accuracy of one cell or a group consisting of a few cells. When a mobile station desires to use the data service, it initiates the establishment of a virtual connection and is registered in a dedicated data service database. At the same time, data indicating the cell or group of cells in which the mobile station is currently located is stored in the data service database. When the mobile station moves from a cell or group of cells into another, the new location data is updated in the data service database. All paging messages and data packets relating to the data service are transmitted via the cell or group of cells determined by the location data of the data service, which results in a smaller amount of signalling in comparison with a case where the normal location area configuration of the cellular network is used. When the use of the packet service ends and the virtual connection is released, the registration of the mobile station in the data service database is removed and only the normal location management of the mobile communication network is performed on the mobile station.